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Cobalt azide complexes with a tris(carbene)borate ligand scaffold
Jeremiah J Scepaniak1, Charles G Margarit, Ranko P Bontchev
1Department of Chemistry and Biochemistry, New Mexico State University, MSC 3C, Las Cruces, NM 88003, USA.
Acta Crystallographica. Section C, Crystal Structure Communications
|September 6, 2013
Summary
This study synthesized novel cobalt(II) and cobalt(III) azido complexes featuring a tris(imidazolylidene)borane ligand. Thermolysis and photolysis attempts to create cobalt nitrides from these complexes were unsuccessful.
Area of Science:
- Inorganic Chemistry
- Organometallic Chemistry
Background:
- The synthesis of novel coordination complexes is crucial for exploring new chemical transformations.
- Cobalt complexes with nitrogen-rich ligands are of interest for catalytic and materials science applications.
Purpose of the Study:
- To synthesize and characterize new four-coordinate cobalt(II) and five-coordinate cobalt(III) azido complexes.
- To investigate the potential of these complexes as precursors for cobalt nitride synthesis via thermolysis or photolysis.
Main Methods:
- Synthesis of a four-coordinate cobalt(II) azido complex from its chloride precursor and sodium azide.
- One-electron oxidation to yield a five-coordinate cobalt(III) bis(azido) complex.
- Thermolysis and photolysis experiments to assess nitride formation.
Main Results:
- Successfully prepared and isolated the cobalt(II) azido complex, PhB(t-BuIm)3CoN3.
- Successfully prepared and isolated the cobalt(III) bis(azido) complex, PhB(t-BuIm)3Co(N3)2.
- Thermolysis and photolysis of both complexes did not yield cobalt nitrides.
Conclusions:
- The synthesized cobalt azido complexes are stable under the investigated thermolysis and photolysis conditions.
- These specific cobalt complexes are not suitable precursors for cobalt nitride formation using these methods.
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